/*******************************************************************************
 * Copyright (c) 2008, 2011 Obeo.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.emf.eef.runtime.ui.widgets.settings;

import java.util.List;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.emf.eef.runtime.EEFRuntimePlugin;

/**
 * @author <a href="mailto:goulwen.lefur@obeo.fr">Goulwen Le Fur</a>
 */
public class EEFEditorContentProvider extends AdapterFactoryContentProvider {

	public static final int CURRENT_VALUES_KIND = 0;

	public static final int MATCHING_VALUES_KIND = 1;

	public int kind = CURRENT_VALUES_KIND;

	/**
	 * @param adapterFactory
	 *            the adapterFactory to use
	 */
	public EEFEditorContentProvider() {
		super(EEFRuntimePlugin.getDefault().getAdapterFactory());
	}

	/**
	 * @param adapterFactory
	 *            the adapterFactory to use
	 */
	public EEFEditorContentProvider(AdapterFactory adapterFactory) {
		super(adapterFactory);
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.jface.viewers.ArrayContentProvider#getElements(java.lang.Object)
	 */
	@Override
	public Object[] getElements(Object inputElement) {
		if (inputElement instanceof EEFEditorSettings) {
			if (kind == CURRENT_VALUES_KIND) {
				Object value = ((EEFEditorSettings)inputElement).getValue();
				return value instanceof Object[] ? (Object[])value : new Object[] {value};
			} else if (kind == MATCHING_VALUES_KIND) {
				Object choiceOfValues = ((EEFEditorSettings)inputElement).choiceOfValues(adapterFactory);
				return choiceOfValues instanceof List ? ((List)choiceOfValues).toArray()
						: new Object[] {choiceOfValues};
			}
		}
		return super.getElements(inputElement);
	}

}